Measured-service telephone system



Aug. 28, 1923.

i E. D. FALES' MEASURED SERVICE TELEPHONE SYSTEM Filed June 14 1919 pfill lli lH 'I atented'Aug.28,1923. a f 1 466 124.;

EDWARD D. FALES, l OF. WES TERN QSPBIRGS,qILLINOISl ASSIGNOR =TO AUTOMATIU ELECTRIC COMPANY,'OF CHICAGO,- I-ILINOIS, CORPORATION; ILLINOIS.

' mam-saver ELEBH N Ef X r M- Application filed 1 E16 14; 1919. "sgria m. 304366. I,

To allwhomz'tm ag 0071862171,." V 1 Be it known that LQEDWARD D1 Fer us, a receiver to initiate call, acircuit'is corncitizen of heUni-ted States of America, and pleted for line relay 6 of the line switch CL 7 a resident of 'Western Springaintlie county Relay 6 prepares aseries circuitlfor relay A of Cook and Statecof Illinois, have 1 7 and rotary magnet S at s'prings 12. and

When I the subscriber at" Al reinoves' his l Vented certain new and "useful jlinproye closes a circuit for magnet 8 direc ti to v nients in Measured-Service Telephone. Sys private Wiper lO, 7 short circuitingrelay 7 terns, of which the following 1s spe'o fi incase the first trunk is busyand groundis cation, 1 present on wiper 1 0, In'this casefn' agnct '10 My invention relates general t ojan int 8 operates jasa buzzer to rotate the wipers provedlmeans for .controlling ,a nieasuregll 9510 and 11 over the contacts ofits bank flfi.

service or toll assessing device andirnore until anfidle trunk line is reached which specifically to in'iproved gcircuit arrange/ has'noground on its test contact. "Atthis V Inents for'autoinatically, controlling afcoii'i tirne relay 7 being no longer shor ted' 'out; v

collectin device such as that s'hownji r .en oi :t d ne theiorla'I 6 n s v, j a V b v y a v United States Letters Patent-:No. 1,0 5 V i v granted November 75, l 9l2to ljgFors'f connection through to the s'eize'd trunk. berg when usedin an ,automatic telephone" As stated, this trunk line is assumedto t 7 terminate in a connector switch having the,

20 Among the objects of' ny invention are usual line relay, one winding connectedto l9, ground from the line circuit and extends;

to provide improved means for collecting the upper conductor and battery and the .75 v

a 'pre-deposited coin immediatelyuponthe,v other to the lower conductor andlgroundp'f response of ,a called subscriber and lor re- Nowwhen relay 7 energizes, a circuit is ,i'unding the coin'to a called subscribe lf Completed for the line relayiof the conhecto-r 25 the call is notsuccessful, when the call ng which extends from battery tthrouglnthe party hangs up by neans of a pair of upper winding, conductor 13, springs 1 high voltage batteries of opposite polarity." an d lfi, upperowindirlg of relay l6 andjre Inthe drawings I have z shownxa s ub sista celfin parallel,winding ofrelay 1 8.

station A equipped with a; pay station deand resistance 19 in parallel, springs 20,' ice such .as that shown, in the above wiper 9,to 'and through line A, andba ck 'mentio edpatent,.haying a,1ine switch C through'wiper 11, springs 21and-22, springs] ii'idividuahthereto whi'chis operated when 24and 2 5, and through the other winding" the subscriber re noyes his receiver toauto of the line relay to ground. The line relay I niatically selectQan idlejonejofla plurality of the connector energizes O erthiscircuit 3510f connector s w i tches (not' sho Wn)" .fThe as does the relay 18. 'Belayf16- does not connectors to ,which the switch C acjenergiz e, requiring the combinedenergy, 9o cess'fn ay berof'any standard type," orieof ;of'both windingsin the same direction to'j such connectors being shown in Unite d attract itsarmaturesbut adapted tobeheldQ states LettersPatent No. 1,269,-24 1;5,.!granted up byits lower winding alone.

40 June 11, 19187 to iAlbert Andersen. This The connector line relay closes oircuit connector is arranged to reverse bfatte ry of the usual release relay to open the -re to the talking circuit 'on certain levels lease circuit and supply ground tothe holdf but does not reverse battery on other. leyels ing trunk 28 which ground passes to relay y when the subscribers are of the class which 7 of switch C to hold'the saine'fenergized, 45' may be called ifree ofcharge. [The group of v and also to the, lower winding of relay 16 relaysE are for coin oontrollingpurposes to p'olar1ze said relay. V i and m y b i s rte inwfih te kie c remt 3 M11 l p ne ergi in ,clq e irc i leading to theconnector "switch or one or for relay 29 at springs 30 and 3l an d opens more;selectorswitches ofthetype' shown-in one point at springs 30 and 32 inithecirc uit s as lm nt one r e t m b iil ted relay 3 36 M also h 0 W P r between the switch C and theioon nector ifn of the resistance 19 and closesspri ngsfio 105, 2

whichcase the relaysE will probablyjbe in} which haye no effect: at this tin e Be-la 29 f t d 'm. the-trunk leading to the selector; ene izes to close'anothen pointthe 1- en g a 'e he :qre z t enir l" be t eare of r er i f a The substation A, Fig. 1, is shown only diagrammatically with only the essential .parts'o'f the Forsberg coin collector which 1s HOD-IGSPODSIVGtO the normal current in the lin'ecircuit and which responds to current from the high 'voltage'battery B to deflect a depositedcoin into the collect chute. Thisniag net also responds to the current from high voltage battery D to operate its through springs 'and 32, springs 33'which areclo'sed momentarily, and relay 34,-to bat- V tery; Relay'34 operates to connect direct :ground' to the release trunk and to hold round on the polarized. winding of relay 16.

f course, the groundfto relay 16 has no "effect, as that relay has not energized, but

armature in the opposite direction to deflect a deposited coin into the refund chute. When the coin is deposited itjrests upon spring-.3 prcssing-thisspring into engage ment Wltllqtl'lfi spring 4 and forcing the springs 4; and 5 out ot engagement. ;It w ll thus be seen that the short circuitis removed from the calling device and the mag- 7 net 2 is connected to the line; circuit. 7

The calling subscriber now ope V calling device to control the connector. sw tch to seize and scriber.

ignal the" called. sub- It the subsrates his the ground to the switch QC prevents that switch from releasing untilthe'coin is rcfunded; A"'further result of the momen-' t'ary energizationof relay 85L is the opening of the line conductors at springs 20 spr1ngs21and 22, and the connect on of the battery D through'the springs-23 andll to the coin collect magnet i at the substation,

' Current-trom thebattery D is of such strength and direction as to cause relayQ operate to direct. tllflCOlnflntO the refund, chute where it may be recovered by therail- .ingsubscriben. Relay 34, of course, eneriber called is a pay line then the back bridge'fot thc connector willbe energized soonas the called sub went in the talking circuit ndover" conduct-ors 13. and'BB. {This causes relay 16 to energize, as'1ts tWOWlIldreversal of current ings now assist each other, and close springs 37 ,to'short-out resistance 17 and also mcmen;

tarily closes the springs 38, 39. and 40 into contact to momentarily close the circuit of slow relay 4L1." Relay' ll operates to open the talking circuit at springs 14L and15 and at,

springsQa and '25 and includes the high resistance bridge winding42 acrosslthe line to hold the connector line relay energized.

Relay ll also closes springs 43 to momentarily connect the battery B to the calliiig line is of higher potential thanthe switchoperating and to magnet 2. Current from battery battery and is of such a directionas to'cause magnet 2 to tilt its armature in one direction to deflectthe coin into the collect chute and restore springs 3, land 5 to normal.

g as relay ll is only energized momentarily; the talking circuit will be open only for an instant and the subscribers may proceed with theconversation over the heavy 0011f ductors shown. 7 1 i it Assume now that the'called subscriber had izes only momentarily due to its 'circuit eing opened at springs 33 of relay 29, and v n as soon as relay 34 deen'ergizes'theswitch a; releases.- It'w1ll be not ced that 1n casethej called subscriber answers and operates relay 16 to collectthe COIIL by means of relay 4i then springs 39 and; 400i relay 1 6 will be held open to preventany further operation of relay 41 to collect the coin, and in such a case when the calling subscriber hangs up, the relay '34 will operate to connect battery D to the calling line for refunding" the coin."

A s the coin has alreadybeen collected, howopera-ting said device,} a n automatic switch forextending a talkingcir'cuitfrom the line toanoth'erline, a battery for operating and talking purposes, said magnet nonresponsive to said battery, a pair of higher voltage bat-' not ,answeredorthat a tree line wasfcalled or that the party called wasbusy. In any,"

case illlfl bitttefy to the calling lin'ecwill not be reversed and therefore relay 16 will not:

be energized to connect battery B to' the calling line. 7 In such a case the coin remains suspended untilthe icalling subscriber restores his receiver and opens the line circuit.

hen the line circuit is opened the line'relay i of theconnector falls back tol release the 7 switch, and remove ground tromthe release 7 trunk, however, relay 18 ofthe group Ede; energizes also to open the circuit ot l jrelay29 and relay 29 falls back to: close la circuit teries, means operated by the called subscriber when he answers'for connecting one of said batteries'to said magnetto collect the} coin,and means controlled solely by the'calling subscriber for connecting the other bat? tery to the magnet to refund the coin. 2. In a. telephone system,;aline, a coin operating said device, an autom atic' switch collectingdevice for saidline, a magnet for forextending-atalking circuit from the line I to another line, a batteryfforoperating and talking purposes, said'magnet nonresponsive to said"battery, a pair of higher voltagebat-f teries, means'operated. by'jthei called sub-" scriber when he answers for connecting-one of said batteries to 's'aidmagnet to collect the coin, and means controlled 'solely by'the call -j V for calls, said collectors each having a'magtery to the magnet to refund the coin, said meme; i

ing'subscri'ber for conne'cting the other bat tery to the magnet 'tor'refund the coin when the connection is'-r'eleased.*

3. In a telephone" system, a line, ac'oin col-- I lecting device for said line, a magnet for operating said device, an automatic sW-itclr'ftu extending atalking circuit from gthesline to another line, a battery ,for opera'ting and talking purposes, said magnet nonresponsive to said battery, a pair of jhighvoltage' batteries, means operated by the called subscribe'r when he answers for connecting ene of said batteries to said ma'gnetto collect the coin, andineans controlled solely by the call ingsi'ibscriberfor connecting the other batlast means common tothe lines.

4t. Ina telephonesystem, a line'having' a" coin collecting ijdevice anda' magnet for of crating same,-an automatic switchforthe' line operative. to extend a, talking-circuit from the line to a called subscriber,-a-relay 'in the talking circuit-controlled, solely by the called subscriber for operating said mag-j net to collect the coinrwhen the called man v answers, and'another relay in the talking circuit controlled solely by the calling sub scribor for operatingsaid magnet to refund 1 a coin to the calling subscriber ifthe call is not successful. V i y -5. In a telephone system, a lineahaving'a coincol'lecting device and a magnetforoperating same, an automatic switch for'ithe line operative to extend a-talking circuit from the line to a called subscriber, a'relay in the talking circuit controlledsolely by the called subscriber for operating said magnet r to collect the coin' when the calledman ansWers, and another relay in the talking. cir-' cuit controlled solelyby the calling sub scriber for operating said magnet to refund a coin to the calling subscriber ifthe call is not successful, both of said relays control ling the magnet by an impulse of increased. X current. r

6. In a telephone system, a line having a coin collecting device and a magnet for operating same, an automatic switch for'the line operative to extend a talking'clrcuit r from the line to a called subscriber, a relay in the talking circuit controlledlsolely by' thecalled subscriber for operating said magnet to collect the coin when the called man answers, and another relay in the talking circuit controlled solely bythe calling sub-V scriber for operating said magnet to refund a coin to the calling subscriber if the call is not successful, one relay controlling the, magnet by an impulse of increased current of one polarity and the other by an impulse of increased current in the opposite direction. 7 V 1 7. In combination with a. telephone system in which coin collectors are used to charge tions' betweentvvo lines, and means forop 'eratif 'ig themagne't in'the collector on the t operatingisame, an automatic switch for the net op'emabl'ei in two directions to refu'iid or if I collect"afcoin,"automatic progressively; mov- 1 ablesvvitches for building up connectionsbetvve'en'tv'vo'lines, means for operating'the magnet inLth'e collector" 'on the, calling lineby T an'im'pulse"of increased current of onepO-j larityat the time the called subscriber an' sWers to collect "the coin, and means responsive to the replacement of ther'eceiver by i the "callingsubscri'ber'for operating the magnet by an impulse of increased current another polarityito refund therei V In"co'n' b-ina tion with a telephonesystem in 'which coin collectors are used. to charge for calls, said collectors eachfhaving amagnet operable'intwodirections to refund or collect the coin, automatic progressively movable switches for building up 'conne'c callinglinefby an impulse of increased our 1 rentof 'one polarity at-"the" time {the called subscriber'anstver'sto collect the coin and for operating the magnet by an impulse' of infcreased current of anotherpolarit'y to refund the coin rivh'en the calling subscriber hangs up,* sa1d last "means common-;to-'a'plurality of the subscribers lines. s

9; 11m telephone f'system, a line liaving a coin collecting device and a magnet for opcrating-same, an automatic switch for the line'ope'rative toextend a talking circuit from reversal of current in the talking circuitto collect the coin, and the other relay controlled by the opening of the line circuit to refund the coin.

10. In a telephone system, a line having a coin collectingdevice and a magnet for operating same, an automatic switch for the line operativeto extend a talking circuit fromtlie line to called subscriber, a relay in thetalking circuit controlled solely by the called subscriber for operating saidmagnet to collectrth e coin when the called man answers, another relay in the talking circuit controlled solely by the 'ca'lling subscriber for operating said magnet to" refund a, coin to the calling subscriber if the call is not successful, and means for opening the talking circuit between the calling and-called subscribers when, either relay operates to control the coin collecting device;

11'. In a telephone system, a "line having r a coin. collecting device and .a magnet for linecoperative ;to extend a talking circuit" controlled solelyby the I calling subscriber for operating saidinagnet to refund a coin tout-he calling subscriber if the call is not successful, said first relay controlled by a reversal of current'in the talking circuit to collect the :oin ,r 1iidthe other-relay controlled by the-- .opening of the line circuit to refund the coin,*and means for, opening the talking circuit :between the; calling andcalledsubscribers when e ther relay operates to control the-coin collecting device.

12.1 In a telephone system, a line having a coin collectingdev ce and. a magnet for operat ng ,same, an automatic sw tch for the line operative.: to extend a; talkingflcircuit "from theline to a; calledsubscriber, a relay in the talking circuit}controlled solely by .7

the. called subscriber toropera ting said mag-1 net to collect, tlie coin when the called man 1 answers, and: another: grel ay in .the I talking circuit controlled solely by the calling sub-V scriber for operating saidmagnet to retund;

a coin to the calling subscriber if thecall; is

' 7 not successful, both of said relays control lingthe magnets by an impulse of increased current, and means for opening the talking circuits between the calling and called subscribers when either relay operates to control the coin collecting device.

137,111 a telephone system, a line, a co n collecting devicetheretor having an operating magnet, means for extending, a; connection fromf-said line to another line, a pair of ,high voltage batteries, means. for 'o-perating saidmagnet to collect a-coin through the medium of one of said batteries, When the. v

called subscriber answers, and means controlled solely by the calling subscriber for;

causing said magnet torefund coins through .the medium of said other battery.

l LJIn a telephone system, a; line, fa coin controlled measured service devicetherefor hayingan operatingmagnet, a pair of high r voltage batter es, means for extending HQCOIlr 'nection toaa calledsubscriber, meanscontrolled by the response of the called subscriber for collecting acoin through the medium of one of said batteries;and meansi .controlledjby'the calling. subscriber for al; I

ways connecting the other battery to-said magneticrefund thejcoin, if t has not been ec ed-1' 15'.-In-a;te1ephone systennfa line, a'coilni collector ther'etorhaying an-o perating mag, I

net means for I extending a connection from said-linerto al'called line, a battery of onev voltage for controlling the operation of said 1neans,- aj battery of higher; voltage, and; means 'c'ontrolledby the calling subscriber 1 only for always connecting'said high volt; age battery to said magnet after each; call to refuncbcoins WhlOll haye not been col r Illinois, this 10 day'of J une, 1919. V

EDWARD 1'). 'FA 'E S; 'f', v 

